Originally Posted By: jshannon
With the right smartphone case, you might could mimick the big buttons of the magellan? Maybe no cases really have big buttons.

Buttons? What buttons? Just tell it what you want! wink
Seriously, I'm developing a GIS app at the moment over the Google Maps. If you can come up with a concise list of voice commands you may want your typical GPS to understand, I could think of implementing that someday.